反应详情

A solution of 674 mg (7.5 mmol) of (R,R)-(−)-2,3-butanediol in 6 ml of DMSO is mixed while being cooled with water in portions with 330 mg of sodium hydride (55-60%), and then stirred for 45 minutes at room temperature. The batch is mixed with 196 mg (0.54 mmol) of (RS)-S-{4-[(5-bromo-4-chloropyrimidin-2-yl)amino]phenyl}-S-methyl sulfoximide in 0.5 ml of DMSO and stirred overnight. It is mixed again with 191 mg (0.53 mmol) of (RS)-S-{4-[(5-bromo-4-chloropyrimidin-2-yl)amino]phenyl}-S-methyl sulfoximide in 0.5 ml of DMSO and stirred for another two hours. Finally, it is mixed with 190 mg of (RS)-S-{4-[(5-bromo-4-chloropyrimidin-2-yl)amino]phenyl}-S-methyl sulfoximide (0.53 mmol) in 0.5 ml of DMSO and stirred for one hour. The batch is added to ice water and extracted from ethyl acetate (4×). The combined organic phases are washed with NaCl solution, filtered through a Whatman filter and concentrated by evaporation. The remaining residue is purified by chromatography (DCM/EtOH 9:1). 166 mg (0.41 mmol, corresponding to 25% of theory) of the product is obtained.

1. stirringstirred overnight
2. stirringstirred for another two hours
3. stirringstirred for one hour
4. extractionextracted from ethyl acetate (4×)
5. washThe combined organic phases are washed with NaCl solution
6. filtrationfiltered through a Whatman
7. filtrationfilter
8. concentrationconcentrated by evaporation
9. customThe remaining residue is purified by chromatography (DCM/EtOH 9:1)
10. custom166 mg (0.41 mmol, corresponding to 25% of theory) of the product is obtained